49 CFR 173.168 - Chemical oxygen generators.
An oxygen generator, chemical (defined in § 171.8 of this subchapter) may be transported only under the following conditions:
(a) Approval. A chemical oxygen generator that is shipped with an explosive or non-explosive means of initiation attached must be classed and approved by the Associate Administrator in accordance with the procedures specified in § 173.56 of this subchapter.
(b) Impact resistance. A chemical oxygen generator, without any packaging, must be capable of withstanding a 1.8 meter drop onto a rigid, non-resilient, flat and horizontal surface, in the position most likely to cause actuation or loss of contents.
(c) Protection against inadvertent actuation. A chemical oxygen generator must incorporate one of the following means of preventing inadvertent actuation:
(1) A chemical oxygen generator that is not installed in protective breathing equipment (PBE):
(i) Mechanically actuated devices:
(A) Two pins, installed so that each is independently capable of preventing the actuator from striking the primer;
(B) One pin and one retaining ring, each installed so that each is independently capable of preventing the actuator from striking the primer; or
(C) A cover securely installed over the primer and a pin installed so as to prevent the actuator from striking the primer and cover.
(ii) Electrically actuated devices: The electrical leads must be mechanically shorted and the mechanical short must be shielded in metal foil.
(iii) Devices with a primer but no actuator: A chemical oxygen generator that has a primer but no actuating mechanism must have a protective cover over the primer to prevent actuation from external impact.
(2) A chemical oxygen generator installed in a PBE must contain a pin installed so as to prevent the actuator from striking the primer, and be placed in a protective bag, pouch, case or cover such that the protective breathing equipment is fully enclosed in such a manner that the protective bag, pouch, case or cover prevents unintentional actuation of the oxygen generator.
(d) Packaging. A chemical oxygen generator and a chemical oxygen generator installed in equipment, (e.g., a PBE) must be placed in a rigid outer packaging that -
(1) Conforms to the requirements of either:
(i) Part 178, subparts L and M, of this subchapter at the Packing Group I or II performance level; or
(ii) The performance criteria in Air Transport Association (ATA) Specification No. 300 for a Category I Shipping Container.
(2) With its contents, is capable of meeting the following additional requirements when transported by cargo-only aircraft:
(i) The Flame Penetration Resistance Test specified in appendix E to part 178 of this subchapter.
(ii) The Thermal Resistance Test specified in appendix D to part 178 of this subchapter.
(e) Equipment marking. The outside surface of a chemical oxygen generator must be marked to indicate the presence of an oxygen generator (e.g., “oxygen generator, chemical”). The outside surface of equipment containing a chemical oxygen generator that is not readily apparent (e.g., a sealed passenger service unit) must be clearly marked to indicate the presence of the oxygen generator (example: “Oxygen Generator Inside”).
(f) Items forbidden in air transportation.
(1) A chemical oxygen generator is forbidden for transportation on board a passenger-carrying aircraft.
(2) A chemical oxygen generator is forbidden for transportation by both passenger-carrying and cargo-only aircraft after:
(i) The manufacturer's expiration date; or
(ii) The contents of the generator have been expended.
Title 49 published on 2015-10-01
The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 49 CFR Part 173 after this date.